Mycat function test - found a kill error

1、select SYSDATE(),SYSTEM_USER(),NOW(),VERSION(),TRIM("  sd  "),LENGTH(TRIM("  sd  "));

Test commonly used database functions, the results are as follows:

2、show PROCESSLIST ;

Display the database process information of the cluster environment The

 stand-alone version of show processlist is the same as the cluster environment, but the information database of the cluster environment is different.

 
 

3. kill process number

The cluster environment found that kill reported an error, but the background log did not report an error. Is it for safety not to allow the operation, or is this a bug of mycat?